JP2014069137A - Method of processing resin covered cable - Google Patents
Method of processing resin covered cable Download PDFInfo
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- JP2014069137A JP2014069137A JP2012217413A JP2012217413A JP2014069137A JP 2014069137 A JP2014069137 A JP 2014069137A JP 2012217413 A JP2012217413 A JP 2012217413A JP 2012217413 A JP2012217413 A JP 2012217413A JP 2014069137 A JP2014069137 A JP 2014069137A
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- resin
- electric wire
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- 239000011347 resin Substances 0.000 title claims abstract description 100
- 229920005989 resin Polymers 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000012545 processing Methods 0.000 title abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 28
- 239000002253 acid Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 65
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 54
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 44
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 44
- 229910052751 metal Inorganic materials 0.000 claims description 39
- 239000002184 metal Substances 0.000 claims description 39
- 239000007864 aqueous solution Substances 0.000 claims description 28
- 239000000243 solution Substances 0.000 claims description 22
- 238000003672 processing method Methods 0.000 claims description 21
- 239000002699 waste material Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 15
- 238000005554 pickling Methods 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 238000004090 dissolution Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 6
- 238000010000 carbonizing Methods 0.000 claims description 3
- 150000001805 chlorine compounds Chemical group 0.000 claims description 2
- 230000005674 electromagnetic induction Effects 0.000 claims description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 20
- 229910052802 copper Inorganic materials 0.000 description 16
- 239000010949 copper Substances 0.000 description 16
- 229910052782 aluminium Inorganic materials 0.000 description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical group Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229960002089 ferrous chloride Drugs 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000005539 carbonized material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical group [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- PSCMQHVBLHHWTO-UHFFFAOYSA-K indium(iii) chloride Chemical group Cl[In](Cl)Cl PSCMQHVBLHHWTO-UHFFFAOYSA-K 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- HWSZZLVAJGOAAY-UHFFFAOYSA-L lead(II) chloride Chemical compound Cl[Pb]Cl HWSZZLVAJGOAAY-UHFFFAOYSA-L 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- YBCAZPLXEGKKFM-UHFFFAOYSA-K ruthenium(iii) chloride Chemical group [Cl-].[Cl-].[Cl-].[Ru+3] YBCAZPLXEGKKFM-UHFFFAOYSA-K 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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- Processing Of Solid Wastes (AREA)
Abstract
Description
本発明は、自動車、家電製品、通信機器又はコンピュータ等に使用される樹脂被覆電線より、樹脂や金属、無機物等の有用成分を分離し回収する樹脂被覆電線の処理方法に関する。 The present invention relates to a method for treating a resin-coated electric wire that separates and recovers useful components such as resins, metals, and inorganic substances from resin-coated electric wires used in automobiles, home appliances, communication devices, computers, and the like.
一般に自動車、家電製品、通信機器又はコンピュータ等には、内部及び外部に樹脂被覆電線が使用されており、廃樹脂被覆電線は銅を含み、資源として利用価値がある。 In general, resin-coated electric wires are used inside and outside automobiles, home appliances, communication devices, computers, etc., and waste resin-coated wires contain copper and have utility value as resources.
上記樹脂被覆電線類の再利用において、上記樹脂被覆電線類はそのまま粉砕され含有される金属が分離回収されていた。 In the reuse of the resin-coated wires, the resin-coated wires were pulverized as they were and the contained metal was separated and recovered.
しかしながら、一部にアルミニウム材が使用された廃樹脂被覆電線、例えば廃シース電線は、通常の廃樹脂被覆電線とは異なって、複数の絶縁被覆導線を、電磁波の影響からシールドするためアルミニウムで被覆し、更にその外側を接着された絶縁性プラスチックで被覆する構成となっている。 However, waste resin-coated electric wires that are partially made of aluminum, such as waste sheathed electric wires, are different from ordinary waste resin-coated electric wires, and are covered with aluminum to shield multiple insulation coated wires from the effects of electromagnetic waves. In addition, the outer side is covered with an insulating plastic adhered.
廃シース電線のようにアルミニウム材が使用されていると、分離回収した銅中にアルミニウムが混入し、純度の高い銅材が回収できなかった。このため、銅線とシース材とを分離純度の高い銅材を回収するには、銅線とシース材との分離が必要であった。そして銅線とシース材とを分離するには剥線機を用いてハグラー刃により１本宛を機械と手作業によってシース材に切り目を入れ、カットしてゆく方法や、ロールクラツシャー方式で切断してゆく方法が行われている。 When the aluminum material was used like the waste sheath electric wire, aluminum mixed in the separated and recovered copper, and the high purity copper material could not be recovered. For this reason, in order to collect | recover a copper material with high isolation | separation purity from a copper wire and a sheath material, isolation | separation of a copper wire and a sheath material was required. In order to separate the copper wire and sheath material, a stripping machine is used to cut the sheath material by a machine and manual work with a Hagler blade. A method of cutting is performed.
例えば、特許文献１及び３には予め粗破砕された廃電線を、ロータリキルンに入れ、過熱蒸気を用いて加熱し、金属以外の部分を炭化し、廃樹脂被覆電線を破砕して、炭化物及びセラミックスを含む粉体とそれ以外の金属類からなる粒状物と粉体を分離する廃樹脂被覆電線の処理方法が記載されている。 For example, in Patent Documents 1 and 3, a waste wire that has been roughly crushed in advance is put into a rotary kiln, heated using superheated steam, carbon other than metal is carbonized, waste resin-coated wire is crushed, carbide and There is described a method for treating a waste resin-coated electric wire that separates powder containing ceramics and other particles of metal and powder.
特許文献２には、廃電線を溶剤に浸して、銅線を分離回収する方法が記載されている。 Patent Document 2 describes a method of separating and recovering a copper wire by immersing a waste wire in a solvent.
しかしながら、上記特許文献１の方法については、ロータリーキルンにて加熱処理をするため、大掛かりな装置を必要とし、かつ、樹脂被覆電線を予め破砕する必要があった。そして、純度の高い金属が得られにくく分離効率が悪い、ひいては歩留まりが悪い等の問題があった。また、特許文献２の方法については、有機溶剤を用いており、安全性や後処理について課題があった。 However, the method of Patent Document 1 requires heat treatment with a rotary kiln, so that a large-scale device is required and the resin-coated electric wire needs to be crushed in advance. In addition, it is difficult to obtain a high-purity metal, resulting in problems such as poor separation efficiency and, in turn, poor yield. Moreover, about the method of patent document 2, the organic solvent was used and there existed a subject regarding safety | security and a post-process.
本発明は、上述した事情に鑑みなされたものであり、その目的は、簡便に、かつ効率よく樹脂被覆電線を処理する方法を提供することにある。 This invention is made | formed in view of the situation mentioned above, The objective is to provide the method of processing a resin-coated electric wire simply and efficiently.
（１） 樹脂で被覆された電線を加熱し、該樹脂を炭化する加熱処理と、
炭化物と電線を分離する分別処理と、
分別処理された電線を酸で洗浄する酸洗処理とを含む、
樹脂被覆電線の処理方法。
(1) Heat treatment for heating an electric wire coated with a resin and carbonizing the resin;
A separation process for separating the carbide and the electric wire;
Including pickling treatment for washing the separated electric wire with acid,
Treatment method for resin-coated wires.
本発明によれば、自動車、家電製品、通信機器又はコンピュータ等に使用される樹脂被覆電線に含有される金属を効率よく分離、回収することができる。また、樹脂被覆電線を粉砕する必要がなく（粉砕してもよい）、大きなサイズであっても処理が可能である。そして、粉砕せずに処理を行うことができるため、作業工程が簡便化するだけでなく、ロータリーキルン等の大掛かりな装置を必要としない。更に樹脂被覆電線に含有される金属をそれぞれ高純度に分離回収することが可能である。 ADVANTAGE OF THE INVENTION According to this invention, the metal contained in the resin-coated electric wire used for a motor vehicle, household appliances, a communication apparatus, or a computer can be isolate | separated and collect | recovered efficiently. Further, it is not necessary to pulverize the resin-coated electric wire (may be pulverized), and processing is possible even with a large size. And since it can process without grind | pulverizing, not only a work process is simplified, but large-scale apparatuses, such as a rotary kiln, are not required. Furthermore, the metals contained in the resin-coated electric wires can be separated and recovered with high purity.
以下図面に基づいて本発明の樹脂被覆電線の処理方法を説明する。
〔加熱処理〕
加熱処理は、樹脂で被覆された電線を加熱し、該樹脂を炭化する処理である。
樹脂被覆電線としては、ケーブル、リード線、エナメル線と種々のものがある。加熱装置に搬入可能な大きさの樹脂被覆電線であれば、粗破砕しなくてよい。加熱装置の大きさにあわせて、大型のものは、二軸剪断破砕機又は衝撃破砕機等で粗破砕することができる。
二軸剪断破砕機としては、例えば、特開平７−１５５６３０号公報、特開２００２−３５５５７５号公報、特開２００５−２７０８３８号公報などに記載されているように、破砕部材が設けられた２本の軸を対向させて配置し、中間位置に廃樹脂被覆電線を入れて破砕するもの等がある。
Hereinafter, a method for treating a resin-coated electric wire according to the present invention will be described with reference to the drawings.
[Heat treatment]
The heat treatment is a treatment for heating the electric wire covered with the resin to carbonize the resin.
There are various types of resin-coated wires such as cables, lead wires, and enamel wires. If the resin-coated electric wire has a size that can be carried into the heating device, it does not need to be roughly crushed. In accordance with the size of the heating device, a large one can be roughly crushed by a biaxial shear crusher or an impact crusher.
As a biaxial shear crusher, for example, as described in JP-A-7-155630, JP-A-2002-355575, JP-A-2005-270838, etc., two crushing members are provided. There are some which are arranged with their axes facing each other and put a waste resin-coated electric wire in the middle position to crush.
被覆樹脂としては、塩化ビニル、ポリエチレン、架橋ポリエチレン、フッ素樹脂、ポリエステル、ポリウレタン、及びポリオレフィン等が挙げられる。
また、樹脂被覆電線にはアルミニウムを含む場合もある。
Examples of the coating resin include vinyl chloride, polyethylene, crosslinked polyethylene, fluororesin, polyester, polyurethane, and polyolefin.
The resin-coated electric wire may contain aluminum.
樹脂被覆電線を加熱装置に搬入する際はベルトコンベア、板、網板（金網、ネットコンベア）に樹脂被覆電線を載せて、搬入することができる。網板１２を用いる場合は、例えば、ネットコンベアや金網であってもよく、網板の網目又は孔の大きさ（粗さ）は、樹脂被覆電線自体を通さない大きさである。
When the resin-coated electric wire is carried into the heating device, the resin-coated electric wire can be loaded on a belt conveyor, a plate, or a mesh plate (metal mesh, net conveyor). In the case where the
樹脂被覆電線は、その種類、大きさ、又は材質ごとに分別して加熱処理に供することができる。これにより、各種金属などの有価物の分離及び高純度での回収を容易且つ確実に行え、資源の有効利用が可能となる。 The resin-coated wires can be subjected to heat treatment by being classified according to the type, size, or material. Thereby, separation of valuable materials such as various metals and recovery with high purity can be performed easily and reliably, and resources can be effectively used.
図１に示すように、樹脂被覆電線２１はそれぞれ網板１２に載置する。
例えば、加熱処理装置１０に配設され、加熱装置１５が側壁に備えられている加熱炉１１内に、網板１２を搬入する。
As shown in FIG. 1, each of the resin-coated
For example, the
処理しようとする樹脂被覆電線２１はそれぞれその種類ごとに網板１２に載置することができ、ベルトコンベア等で搬送して、加熱処理に供してもよい。この載置は、手作業或いは適当なガイド手段などにより樹脂被覆電線２１の長手方向を揃えるようにしてもよい。炭化した樹脂を網板１２の網目から落下させ、炭化した樹脂を容器１７に回収することもできる。
The resin-coated
加熱処理における加熱の温度は、樹脂被覆電線２１に含まれる樹脂材料が炭化する温度である必要がある。具体的には５００℃〜８００℃が好ましく、５５０℃〜７００℃であることが更に好ましく、５５０℃〜６５０℃であることが特に好ましい。
加熱処理における加熱に供する時間は加熱の温度によって異なるが、短時間で処理するのが好ましく、５秒〜３００秒がより好ましく、１０秒〜２４０秒であることが更に好ましく、１００秒〜１８０秒であることが特に好ましい。
The heating temperature in the heat treatment needs to be a temperature at which the resin material included in the resin-coated
Although the time for heating in the heat treatment varies depending on the temperature of the heating, the treatment is preferably performed in a short time, preferably 5 seconds to 300 seconds, more preferably 10 seconds to 240 seconds, and 100 seconds to 180 seconds. It is particularly preferred that
加熱方法は、加熱流体を樹脂被覆電線２１に吹き付けるのでもよく、加熱流体の雰囲気炉内に滞留させるものでもよく、加熱効率、処理装置の建設コストを勘案して処理できるものである。
加熱流体は高温空気による加熱でもよいが、水蒸気加熱、特に過熱水蒸気は熱容量が大きく、熱効率が良いので過熱水蒸気による加熱が最も好ましい。該加熱により電線を被覆する樹脂を効率よく脆性化、分解して炭化するものである。
加熱流体の雰囲気が炉内に滞留する方が熱容量は大きく短時間で処理できる。加熱流体を吹き付ける方法は熱容量が小さく、処理時間が長くなるが装置が簡素化できるメリットはある。加熱温度、加熱方法、及び加熱時間については全体の処理コストを勘案して処理できる。
The heating method may be that the heating fluid is sprayed onto the resin-coated
The heating fluid may be heated by high-temperature air, but steam heating, particularly superheated steam, has a large heat capacity and good thermal efficiency, so heating by superheated steam is most preferable. The resin that coats the wire by the heating is efficiently embrittled, decomposed and carbonized.
If the atmosphere of the heating fluid stays in the furnace, the heat capacity is larger and the treatment can be performed in a shorter time. The method of spraying the heating fluid has a merit that the apparatus can be simplified although the heat capacity is small and the processing time becomes long. The heating temperature, heating method, and heating time can be processed in consideration of the entire processing cost.
該加熱流体の加熱はガス等燃料の燃焼での加熱、電熱ヒーター等による加熱、誘導加熱装置による加熱等が利用できる。又短時間で処理可能であれば樹脂が酸化しないように真空加熱炉を使用することも可能である。炉は横型でも、縦型でも可能である。 The heating fluid can be heated by combustion of fuel such as gas, heating by an electric heater, heating by an induction heating device, or the like. In addition, a vacuum heating furnace can be used so that the resin is not oxidized if it can be processed in a short time. The furnace can be horizontal or vertical.
〔分別処理〕
分別処理は炭化物と電線を分離する処理である。
樹脂被覆電線２１に含まれる電線は、分別処理によって、加熱処理により炭化した樹脂（炭化物）と、分離することができる。
分離は、振動、又は機械的外力を与えたり、洗浄することで行うことができる。
加熱処理により炭化した樹脂（炭化物）は脆く壊れやすいので、図１に示すように網板１２の網目から自重により落下するが、炭化物の一部は電線から分離されずに電線の表面に付着したまま残ることがある。電線と炭化物の分離を促進するため、網板１２に振動又は機械的外力を与えることができる。振動と機械的外力を組み合わせて与えることもできる。機械的外力としては、ブラシ、ショットブラスト等による処理が挙げられる。
機械的な外力を与えることにより、炭化物は、樹脂被覆電線２１から強制的に剥離されて、自重により樹脂被覆電線２１から離脱し落下する。
また、水等で洗浄し、電線から炭化物を分離することも可能であり、ジェット洗浄等の方法も利用できるものである。
[Separation process]
The separation process is a process for separating the carbide and the electric wire.
The electric wire contained in the resin-coated
Separation can be performed by applying vibration or mechanical external force, or by washing.
Since the resin (carbide) carbonized by the heat treatment is brittle and fragile, it falls by its own weight from the mesh of the
By applying a mechanical external force, the carbide is forcibly separated from the resin-coated
Further, it is possible to separate the carbide from the electric wire by washing with water or the like, and a method such as jet washing can be used.
〔酸洗処理〕
分別処理された電線を酸で洗浄する酸洗処理について説明する。
酸洗処理により、電線に残存する、わずかなアルミニウムも効果的に除去することができる。電線にアルミニウムが残存すると、電線に使用された銅を高純度で分離回収する際の妨げとなる。
[Pickling treatment]
The pickling process which wash | cleans the electric wire by which the separation process was carried out with an acid is demonstrated.
By pickling treatment, a slight amount of aluminum remaining in the electric wire can be effectively removed. If aluminum remains in the electric wire, it becomes an obstacle when the copper used in the electric wire is separated and recovered with high purity.
例えば、炭化物と分別処理により分離して回収した電線を、塩酸に浸漬する。該塩酸の濃度は、１０〜３５質量％（更に好ましくは、１５〜３５質量％）であることが好ましい。すなわち、塩化水素を１０〜３５質量％（更に好ましくは、１５〜３５質量％）含有する水溶液を使用するのがよい。
ここで、塩酸の代わりに硫酸や硝酸を使用することもできるが、塩酸の方が後処理が容易である。この場合の塩酸による酸洗時間は、常温で５〜３０分程度が好ましいが、濃度によって異なる。
酸洗浄した電線は水洗を行うことが好ましい。
また、公知の方法（特開平６−１２７９４６号公報）により、酸洗に用いた塩酸液から、アルミニウムを分離回収することができる。
For example, the electric wires separated and collected by the carbide and the separation treatment are immersed in hydrochloric acid. The concentration of the hydrochloric acid is preferably 10 to 35% by mass (more preferably 15 to 35% by mass). That is, an aqueous solution containing 10 to 35% by mass (more preferably 15 to 35% by mass) of hydrogen chloride is preferably used.
Here, sulfuric acid or nitric acid can be used in place of hydrochloric acid, but hydrochloric acid is easier to post-treat. In this case, the pickling time with hydrochloric acid is preferably about 5 to 30 minutes at room temperature, but varies depending on the concentration.
The acid-washed electric wire is preferably washed with water.
In addition, aluminum can be separated and recovered from the hydrochloric acid solution used for pickling by a known method (Japanese Patent Laid-Open No. 6-127946).
以上のようにして、樹脂被覆電線に含有される金属銅を、高純度で分離及び回収することが容易且つ確実に行うことができ、資源の有効利用ができる。 As described above, the copper metal contained in the resin-coated electric wire can be easily and reliably separated and recovered with high purity, and resources can be effectively used.
分別して回収した金属は更に、溶解処理に供することにより、高い純度で分離回収することができる。 The separated and recovered metal can be further separated and recovered with high purity by subjecting it to a dissolution treatment.
〔溶解処理〕
酸洗浄し、水洗した加熱処理した樹脂被覆電線２１を、塩化第二鉄水溶液、又は塩酸が添加された塩化第二鉄水溶液を用いて該電線に含有される金属の一部を溶解させることができる。
また、加熱処理の後、炭化物と電線を分離する分別処理が溶解処理に供してもよい。
樹脂被覆電線の処理方法は、分別処理が、塩化第二鉄水溶液又は塩酸が添加された塩化第二鉄水溶液を用いて該電線に含有される金属の一部を溶解させる溶解処理と、該溶解処理により塩化第二鉄水溶液又は塩酸が添加された塩化第二鉄水溶液に該電線に含有される金属の一部が溶解した廃液と、塩化第二鉄水溶液又は塩酸が添加された塩化第二鉄水溶液に溶解しない金属とを分離し、該廃液に鉄粉を添加し、該廃液中に溶存する塩化物を置換させて前記溶解した金属を回収することを含むことが好ましい
[Dissolution treatment]
The heat-treated resin-coated
Moreover, the fractionation process which isolate | separates a carbide | carbonized_material and an electric wire after heat processing may use for a melt | dissolution process.
The method for treating a resin-coated electric wire includes: a separation treatment in which a part of a metal contained in the electric wire is dissolved using a ferric chloride aqueous solution or a ferric chloride aqueous solution to which hydrochloric acid is added; A waste liquid in which a part of the metal contained in the wire is dissolved in a ferric chloride aqueous solution or a ferric chloride aqueous solution to which hydrochloric acid is added by treatment, and a ferric chloride aqueous solution or hydrochloric acid to which ferric chloride is added It is preferable to include separating the metal that does not dissolve in the aqueous solution, adding iron powder to the waste liquid, replacing chloride dissolved in the waste liquid, and recovering the dissolved metal
ここで、使用する塩化第二鉄水溶液中の塩化第二鉄（ＦｅＣｌ3）の濃度は、概ね１０質量％以上（望ましくは３０質量％以上）でよいが、経済性を考慮すれば、６０質量％以下（好ましくは５５質量％以下）である。
また、塩化第二鉄水溶液中に、更に塩酸（ＨＣｌ）を添加することも可能であるが、この場合、塩化水素３５質量％水溶液の塩酸と塩化第二鉄５０質量％水溶液を２０：８０〜５０：５０の体積比率で混合するのがよい。
Here, the concentration of ferric chloride (FeCl 3 ) in the aqueous ferric chloride solution to be used may be approximately 10% by mass or more (preferably 30% by mass or more). % Or less (preferably 55% by mass or less).
Further, hydrochloric acid (HCl) can be further added to the aqueous ferric chloride solution. In this case, hydrochloric acid in a 35% by weight aqueous solution of hydrogen chloride and an aqueous solution of 50% by weight ferric chloride in 20:80 to Mixing at a volume ratio of 50:50 is preferred.
上記した塩化第二鉄水溶液と、塩酸が添加された塩化第二鉄水溶液には、新たに製造した新液（再生液を含む）と、新液を使用した後の廃液（例えば、塩化銅や塩化ニッケルが溶存している液、更には塩化第一鉄が存在している液）のいずれも使用できる。
これにより、金属成分中の各種金属は塩化物を形成し、塩化第二鉄水溶液に溶解する。
The ferric chloride aqueous solution and the ferric chloride aqueous solution to which hydrochloric acid has been added include a newly produced new solution (including a regenerated solution) and a waste solution after using the new solution (for example, copper chloride or Either a solution in which nickel chloride is dissolved or a solution in which ferrous chloride is present can be used.
Thereby, various metals in the metal component form chlorides and dissolve in the aqueous ferric chloride solution.
具体的には、銅は塩化銅（ＣｕＣｌ2）、ニッケルは塩化ニッケル（ＮｉＣｌ2）、クロムは塩化クロム（ＣｒＣｌ3）、錫は塩化錫（ＳｎＣｌ2）、鉛は塩化鉛（ＰｂＣｌ2）、ルテニウムは塩化ルテニウム（ＲｕＣｌ3）、アルミニウムは塩化アルミニウム（ＡｌＣｌ3）、インジウムは塩化インジウム（ＩｎＣｌ3）となる。 Specifically, copper is copper chloride (CuCl 2 ), nickel is nickel chloride (NiCl 2 ), chromium is chromium chloride (CrCl 3 ), tin is tin chloride (SnCl 2 ), lead is lead chloride (PbCl 2 ), Ruthenium is ruthenium chloride (RuCl 3 ), aluminum is aluminum chloride (AlCl 3 ), and indium is indium chloride (InCl 3 ).
金属成分は、塩化第二鉄水溶液による処理をした後、溶解処理し原料として再利用できる。なお、金属の種類（例えば、鉄系金属）によっては、塩化第二鉄水溶液による処理をした後、そのまま液切り処理を行った後、溶解処理を行ってもよい。 The metal component can be reused as a raw material after being treated with an aqueous ferric chloride solution and then dissolved. Depending on the type of metal (for example, an iron-based metal), after the treatment with a ferric chloride aqueous solution, the draining treatment may be performed as it is, and the dissolution treatment may be performed.
金、銀、パラジウム、及び白金は、塩化第二鉄水溶液に溶解しないため、例えば、ろ過等の固液分離により回収することができる。そして、さらに比重分離、山元還元によりそれぞれ高い純度で分離回収することができる。
ここで、比重分離とは各物質の比重差を利用して分離回収行うものであり、風力分別、水力分別、重液分別、流動層を利用した比重分別がある。
ここで、山元還元とは、溶融飛灰からの非鉄金属回収方法として、一般的に、非鉄精錬所で使用されている。
Since gold, silver, palladium, and platinum are not dissolved in the ferric chloride aqueous solution, they can be recovered by solid-liquid separation such as filtration. Further, separation and recovery can be performed with high purity by specific gravity separation and Yamamoto reduction.
Here, the specific gravity separation is performed by separating and collecting by using the specific gravity difference of each substance, and includes specific gravity classification using wind separation, hydraulic separation, heavy liquid separation, and fluidized bed.
Here, Yamamoto reduction is generally used in non-ferrous smelters as a method for recovering non-ferrous metals from molten fly ash.
一方、塩化第二鉄水溶液に溶解させた金属成分は、この塩化第二鉄水溶液（廃液）から析出させて回収する。この方法としては、従来公知の方法を使用でき、例えば、電線が、銅とニッケルを含んでいる場合には、例えば、特開平６−１２７９４６号公報に記載の方法を使用できる。また、錫や銀、インジウム等も、同様の方法を使用できる。なお、クロムとアルミニウムは、水酸化物として回収される。
この具体的な方法は、特許第４０１８８３２号公報に記載されているため、以下簡単に説明する。
On the other hand, the metal component dissolved in the ferric chloride aqueous solution is collected by precipitation from the ferric chloride aqueous solution (waste liquid). As this method, a conventionally known method can be used. For example, when the electric wire contains copper and nickel, for example, the method described in JP-A-6-127946 can be used. The same method can be used for tin, silver, indium, and the like. Note that chromium and aluminum are recovered as hydroxides.
This specific method is described in Japanese Patent No. 4018832 and will be briefly described below.
上記した金属成分を含有する塩化第二鉄水溶液中に鉄粉を添加し、塩化第二鉄水溶液中に溶存する塩化銅（塩化物）を置換させ、銅を析出させて分離回収する。なお、塩化第二鉄水溶液中に塩化第二鉄が残存している場合は、鉄粉を添加して先に塩化第一鉄に還元しておく方が、銅の回収効率が向上し、望ましい。
次に、銅が除去された脱銅水溶液中に鉄粉を添加し、かつ鉄イオン濃度を制御してニッケルを析出させ分離回収する。これにより、塩化第二鉄水溶液中から銅とニッケルを回収できる。
以上の方法により、樹脂被覆電線に含まれる金属成分を回収することで、これらを再利用できるので、資源の有効利用が図れる。
Iron powder is added to the ferric chloride aqueous solution containing the above-described metal components to replace copper chloride (chloride) dissolved in the ferric chloride aqueous solution, and copper is deposited and separated and recovered. In addition, when ferric chloride remains in the ferric chloride aqueous solution, it is preferable to add iron powder and reduce it to ferrous chloride first because the copper recovery efficiency is improved. .
Next, iron powder is added to the copper removal aqueous solution from which copper has been removed, and the iron ion concentration is controlled to precipitate and separate and recover nickel. Thereby, copper and nickel can be recovered from the aqueous ferric chloride solution.
By recovering the metal components contained in the resin-coated electric wire by the above method, these can be reused, so that resources can be effectively used.
本発明の樹脂被覆電線の処理方法は、アルミニウム、及び銅を分離回収することができる。さらに、ロータリーキルンが不要なため、処理対象物である樹脂被覆電線を粉砕処理する必要がなく、大きなサイズで処理可能となる。また、種類ごとに回収できることから、有価金属を高純度に回収し、資源として再利用することが可能となる。 The method for treating a resin-coated electric wire of the present invention can separate and recover aluminum and copper. Furthermore, since a rotary kiln is not required, it is not necessary to pulverize the resin-coated electric wire that is the object to be processed, and processing can be performed in a large size. Moreover, since it can collect | recover for every kind, it becomes possible to collect | recover valuable metals with high purity, and to reuse as a resource.
以上、説明したように、本明細書には、下記〔１〕〜〔８〕の樹脂被覆電線の処理方法が開示されている。
〔１〕
樹脂で被覆された電線を加熱し、該樹脂を炭化する加熱処理と、
炭化物と電線を分離する分別処理と、
分別処理された電線を酸で洗浄する酸洗処理とを含む、
樹脂被覆電線の処理方法。
〔２〕
〔１〕に記載の樹脂被覆電線の処理方法であって、
前記加熱が、熱風、電磁誘導加熱又は過熱水蒸気を用いた加熱である樹脂被覆電線の処理方法。
〔３〕
〔１〕又は〔２〕に記載の樹脂被覆電線の処理方法であって、
前記加熱が、過熱水蒸気を用いて５００℃〜８００℃で行われる樹脂被覆電線の処理方法。
〔４〕
〔３〕に記載の樹脂被覆電線の処理方法であって、
前記加熱における加熱時間が、５秒〜３００秒である樹脂被覆電線の処理方法。
〔５〕
〔１〕〜〔４〕のいずれか１項に記載の樹脂被覆電線の処理方法であって、
前記酸が塩酸である樹脂被覆電線の処理方法。
〔６〕
〔５〕に記載の樹脂被覆電線の処理方法であって、
前記塩酸の濃度が１０〜３５質量％である樹脂被覆電線の処理方法。
〔７〕
〔１〕〜〔６〕のいずれかに記載の樹脂被覆電線の処理方法であって、
前記分別処理が、
塩化第二鉄水溶液又は塩酸が添加された塩化第二鉄水溶液を用いて該電線に含有される金属の一部を溶解させる溶解処理と、
該溶解処理により塩化第二鉄水溶液又は塩酸が添加された塩化第二鉄水溶液に該電線に含有される金属の一部が溶解した廃液と、塩化第二鉄水溶液又は塩酸が添加された塩化第二鉄水溶液に溶解しない金属とを分離し、
該廃液に鉄粉を添加し、
該廃液中に溶存する塩化物を置換させて前記溶解した金属を回収することを含む、樹脂被覆電線の処理方法。
〔８〕
〔１〕〜〔７〕のいずれか１項に記載の樹脂被覆電線の処理方法であって、
前記樹脂被覆電線が、ケーブル、リード線、又はエナメル線である樹脂被覆電線の処理方法。
As described above, in this specification, the following [1] to [8] resin-coated electric wire processing methods are disclosed.
[1]
A heat treatment for heating the electric wire covered with the resin and carbonizing the resin;
A separation process for separating the carbide and the electric wire;
Including pickling treatment for washing the separated electric wire with acid,
Treatment method for resin-coated wires.
[2]
It is a processing method of the resin-coated electric wire according to [1],
A method for treating a resin-coated electric wire, wherein the heating is heating using hot air, electromagnetic induction heating, or superheated steam.
[3]
It is a processing method of the resin-coated electric wire according to [1] or [2],
A method for treating a resin-coated electric wire, wherein the heating is performed at 500 ° C. to 800 ° C. using superheated steam.
[4]
It is a processing method of the resin-coated electric wire according to [3],
The processing method of the resin-coated electric wire in which the heating time in the heating is 5 seconds to 300 seconds.
[5]
It is the processing method of the resin-coated electric wire according to any one of [1] to [4],
A method for treating a resin-coated electric wire, wherein the acid is hydrochloric acid.
[6]
It is a processing method of the resin-coated electric wire according to [5],
The processing method of the resin-coated electric wire whose density | concentration of the said hydrochloric acid is 10-35 mass%.
[7]
It is a processing method of the resin-coated electric wire according to any one of [1] to [6],
The separation process is
A dissolution treatment for dissolving a part of the metal contained in the electric wire using a ferric chloride aqueous solution or a ferric chloride aqueous solution to which hydrochloric acid is added;
A waste liquid in which a part of the metal contained in the wire is dissolved in a ferric chloride aqueous solution or a ferric chloride aqueous solution to which hydrochloric acid is added by the dissolution treatment, and a ferric chloride aqueous solution or hydrochloric acid to which a ferric chloride aqueous solution or hydrochloric acid is added. Separating metals that do not dissolve in ferric aqueous solution,
Add iron powder to the waste liquid,
A method for treating a resin-coated electric wire, comprising: replacing chloride dissolved in the waste liquid and recovering the dissolved metal.
[8]
It is the processing method of the resin-coated electric wire according to any one of [1] to [7],
A method for treating a resin-coated electric wire, wherein the resin-coated electric wire is a cable, a lead wire, or an enameled wire.
以下、本発明にかかる樹脂被覆電線の処理方法の作用、効果の確認のために行った実施例について説明する。 Hereinafter, the Example performed for the confirmation of the effect | action and effect of the processing method of the resin-coated electric wire concerning this invention is demonstrated.
〔実施例１〕
（加熱処理）
ケーブルをメッシュコンベアに載せ、６００℃の過熱水蒸気雰囲気に投入し、１分間（６０秒）処理した。
（１）加熱温度：６００℃（過熱水蒸気温度）
（２）加熱方法：過熱水蒸気雰囲気をケーブルに吹き付けた。
（３）加熱時間：６０秒
（４）処理対象サンプル：ケーブル
[Example 1]
(Heat treatment)
The cable was placed on a mesh conveyor, placed in a 600 ° C. superheated steam atmosphere, and treated for 1 minute (60 seconds).
(1) Heating temperature: 600 ° C. (superheated steam temperature)
(2) Heating method: A superheated steam atmosphere was sprayed on the cable.
(3) Heating time: 60 seconds (4) Sample to be treated: Cable
加熱処理の結果、処理後のサンプルを指でほぐす程度の力で、ケーブルに使用されている電線を露出させることが出来た。 As a result of the heat treatment, it was possible to expose the electric wire used for the cable with the force of loosening the treated sample with fingers.
（分別処理）
加熱処理後、４．０ＭＰａ ４０Ｌ／ｍｉｎの高圧水により水洗し、加熱処理により炭化した樹脂の炭化物と電線とを分離させた。
(Separation process)
After the heat treatment, it was washed with 4.0 MPa 40 L / min high pressure water to separate the carbide of the resin carbonized from the heat treatment and the electric wire.
（酸洗処理）
加熱処理後、炭化物を除いた２００ｋｇの電線を籠に入れて、濃度が３５質量％の塩酸に３０分浸漬した。これによって、電線の表面に残存する金属の一部が塩酸に溶けた。
酸洗後の電線を水を張った水槽に浸漬することにより水洗し、電線を回収した。
また、該金属が溶解した塩酸より、特開平６−１２７９４６に記載の方法を用いて、錫、アルミニウムを回収した。
なお、この酸洗処理は常温で行ったが加熱してもよい。
(Pickling treatment)
After the heat treatment, a 200 kg electric wire excluding carbide was put in a basket and immersed in hydrochloric acid having a concentration of 35% by mass for 30 minutes. Thereby, a part of the metal remaining on the surface of the electric wire was dissolved in hydrochloric acid.
The electric wire after pickling was washed by immersing it in a water tank filled with water, and the electric wire was collected.
Further, tin and aluminum were recovered from hydrochloric acid in which the metal was dissolved using the method described in JP-A-6-127946.
In addition, although this pickling process was performed at normal temperature, you may heat.
〔実施例２〕
（溶解処理）
実施例１の酸洗後の電線を籠に入れて、温度が常温から６０℃（この実施例では４０℃）の塩化第二鉄液中に浸漬させ、含有される金属成分を塩化第二鉄液に溶解させた。なお、使用した塩化第二鉄液の塩化第二鉄の濃度は３０〜５０質量％、塩化第二鉄液への浸漬時間は６０〜１８０分（平均１２０分）とした。特開平６−１２７９４６に記載の方法を用いて、塩化第二鉄液より該溶解金属である銅を回収した。回収した銅の純度は９５．０％以上であった。
ケーブルが金、銀、パラジウムを含む場合、塩化第二鉄液に溶解せずに残った未溶解残渣をろ過し、ケーブルに使用されている金を回収できる。更に、比重分離及び溶融処理により、銀、パラジウムを分離回収することができる。
[Example 2]
(Dissolution treatment)
The wire after pickling in Example 1 is put in a basket and immersed in a ferric chloride solution having a temperature from room temperature to 60 ° C. (40 ° C. in this example), and the contained metal component is ferric chloride. Dissolved in the liquid. In addition, the density | concentration of the ferric chloride of the used ferric chloride liquid was 30-50 mass%, and the immersion time to the ferric chloride liquid was 60 to 180 minutes (average 120 minutes). Using the method described in JP-A-6-127946, copper as the dissolved metal was recovered from the ferric chloride solution. The purity of the recovered copper was 95.0% or more.
When the cable contains gold, silver and palladium, the undissolved residue remaining without dissolving in the ferric chloride solution can be filtered to recover the gold used in the cable. Furthermore, silver and palladium can be separated and recovered by specific gravity separation and melting treatment.
以上のことから、本発明の樹脂被覆電線の処理方法を使用することで、処理コストや設備コストを過剰にかけることなく、樹脂被覆電線から金属成分を個別に高純度に回収して再利用でき、資源の有効利用が図れることを確認できた。 From the above, by using the method for treating a resin-coated electric wire of the present invention, metal components can be individually recovered and reused from the resin-coated electric wire with high purity without excessive processing costs and equipment costs. It was confirmed that effective use of resources was possible.
以上、本発明を、実施の形態を参照して説明してきたが、本発明は何ら上記した実施の形態に記載の構成に限定されるものではなく、特許請求の範囲に記載されている事項の範囲内で考えられるその他の実施の形態や変形例も含むものである。 As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included.
１０：処理装置
１１：加熱炉
１２：板
１５：加熱装置
１７：容器
２１：樹脂被覆電線
10: Treatment device 11: Heating furnace 12: Plate 15: Heating device 17: Container 21: Resin-coated electric wire
Claims (8)
炭化物と電線を分離する分別処理と、
分別処理された電線を酸で洗浄する酸洗処理とを含む、
樹脂被覆電線の処理方法。 A heat treatment for heating the electric wire covered with the resin and carbonizing the resin;
A separation process for separating the carbide and the electric wire;
Including pickling treatment for washing the separated electric wire with acid,
Treatment method for resin-coated wires.
前記加熱が、熱風、電磁誘導加熱又は過熱水蒸気を用いた加熱である樹脂被覆電線の処理方法。 It is a processing method of the resin-coated electric wire according to claim 1,
A method for treating a resin-coated electric wire, wherein the heating is heating using hot air, electromagnetic induction heating, or superheated steam.
前記加熱が、過熱水蒸気を用いて５００℃〜８００℃で行われる樹脂被覆電線の処理方法。 It is a processing method of the resin-coated electric wire according to claim 1 or 2,
A method for treating a resin-coated electric wire, wherein the heating is performed at 500 ° C. to 800 ° C. using superheated steam.
前記加熱における加熱時間が、５秒〜３００秒である樹脂被覆電線の処理方法。 It is a processing method of the resin-coated electric wire according to claim 3,
The processing method of the resin-coated electric wire in which the heating time in the heating is 5 seconds to 300 seconds.
前記酸が塩酸である樹脂被覆電線の処理方法。 It is a processing method of the resin-coated electric wire according to any one of claims 1 to 4,
A method for treating a resin-coated electric wire, wherein the acid is hydrochloric acid.
前記塩酸の濃度が１０〜３５質量％である樹脂被覆電線の処理方法。 It is a processing method of the resin-coated electric wire according to claim 5,
The processing method of the resin-coated electric wire whose density | concentration of the said hydrochloric acid is 10-35 mass%.
前記分別処理が、
塩化第二鉄水溶液又は塩酸が添加された塩化第二鉄水溶液を用いて該電線に含有される金属の一部を溶解させる溶解処理と、
該溶解処理により塩化第二鉄溶液又は塩酸が添加された塩化第二鉄溶液に該電線に含有される金属の一部が溶解した廃液と、塩化第二鉄溶液又は塩酸が添加された塩化第二鉄溶液に溶解しない金属とを分離し、
該廃液に鉄粉を添加し、
該廃液中に溶存する塩化物を置換させて前記溶解した金属を回収することを含む、
樹脂被覆電線の処理方法。 It is a processing method of the resin-coated electric wire according to any one of claims 1 to 6,
The separation process is
A dissolution treatment for dissolving a part of the metal contained in the electric wire using a ferric chloride aqueous solution or a ferric chloride aqueous solution to which hydrochloric acid is added;
A waste liquid in which a part of the metal contained in the electric wire is dissolved in a ferric chloride solution or a ferric chloride solution to which hydrochloric acid is added by the dissolution treatment, and a ferric chloride solution in which a ferric chloride solution or hydrochloric acid is added. Separating the metal that does not dissolve in the ferric solution,
Add iron powder to the waste liquid,
Substituting chloride dissolved in the waste liquid and recovering the dissolved metal,
Treatment method for resin-coated wires.
前記樹脂被覆電線が、ケーブル、リード線、又はエナメル線である樹脂被覆電線の処理方法。 It is a processing method of the resin-coated electric wire according to any one of claims 1 to 7,
A method for treating a resin-coated electric wire, wherein the resin-coated electric wire is a cable, a lead wire, or an enameled wire.
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